I dpon't know for sure, but I would expect the KSVK... which off the top of my head is the bullpup layout bolt action 12.7mm rifle would be useful against human targets out to about 1,500m, but I would suspect lacks the high accuracy ammo for such a role.

It would be more of an anti material rifle than a sniper rifle... the SSG rifle would likely be more accurate and useful at extended ranges... though its calibre would restrict its effective range to about 800-900m.

I do know the Russian military is testing 338LM calibre weapons and as such they would be effective at up to 1,500m depending on which version they are testing.

As to TOEs most paper TOEs are just that, and for different missions they would have different numbers of men with different equipment fits.

You might ask Vlad to chat about his experience, though obviously there are likely things he wont want to share and also things he can't share on an open forum.